Question

IUPAC name of (pt(NH3)4Br2)Br??

Answer 1

teraamminedibromoplatinum(IV) chloride It can be cis or trans 
Alphabetical: ammine (NH3 note double m) first then bromo (since anionic) platinum(IV) no space 
Oxdn State: [Pt] - 0 (4 :NH3) - 2(2 Br^-) = 2+ (to balance the 2 Cl^- outside the coordination sphere) 
I think IUPAC wants us to call the Br^- ligand bromido but it hasn't gained acceptance